qcap: Fix a mem leak on an error path. Found by Smatch.

[Michael Stefaniuc]

Though the error path is never accessed as OutputPin_Init() returns
always S_OK.

A nicer way would be to change OutputPin_Init() to return void and thus
eliminate that specific error path completely. But i have no clue about
COM and thus I take the "easy" way first ...
---
 dlls/qcap/vfwcapture.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/dlls/qcap/vfwcapture.c b/dlls/qcap/vfwcapture.c
index b461054..5e46335 100644
--- a/dlls/qcap/vfwcapture.c
+++ b/dlls/qcap/vfwcapture.c
@@ -767,6 +767,8 @@ VfwPin_Construct( IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec,
         *ppPin = (IPin *)(&pPinImpl->pin.pin.lpVtbl);
         return S_OK;
     }
+
+    CoTaskMemFree(pPinImpl);
     return E_FAIL;
 }
 
-- 
1.5.3.4
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